Objective:To analyze the knowledge, attitude and behavior of menstruation among female students of a university and the influencing factors, and to provide the theoretical basis for health care in the menstrual period of female college students. Methods: A stratified random sampling was used. Questionnaires designed independently were adopted. Epidata software was used to establish database and the statistical software SPSS17.0 was chosen for statistical analysis.Results: Female college students' knowledge of menstruation mainly came from classroom learning, classmates, friends, parents, teachers, books and magazines. The difference between female students of medicine major and non-medicine major was statistically significant(P﹤0.05)as to three kinds of sources of knowledge, i.e. classroom learning(χ2=13.620, P=0.020), books and magazines(χ2=11.684, P=0.033), the internet(χ2=7.968, P=0.041). The rates of awareness of menstruation between female students of medicine major and non-medicine major were 89.56% and 71.09% respectively. The difference between female students of medicine major and non-medicine major was statistically significant(P﹤0.05)as to the rates of awareness of three aspects, i.e. the concept of "menstruation"(χ2=10.263,P=0.027), menstrual cycle (χ2=14.274,P=0.013)and menstrual period (χ2=12.827,P=0.038). According to regression analysis, factors influencing the knowledge of menstruation included the major (medicine or non-medicine), age, and the only child or not. The OR and 95% confidence interval were 1.980 (1.345~2.916), 2.827 (1.382~5.785)and 0.604 (.367~.992). Conclusion: The female college
students have some knowledge of menstruation, but it is not comprehensive. The university should strengthen education aiming at female students of different majors.